Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Market UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova | 100% |
| Completed Match | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 Winner | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 Winner | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set Handicap +/-1.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 8.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 9.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 10.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 8.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Total Sets: O/U 2.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 21.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 9.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 22.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set Handicap +/-1.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 10.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 23.5 | 0% |
Market context
Liudmila Samsonova and Barbora Krejcikova are scheduled to meet in the second round of the National Bank Open on an outdoor hard court in Toronto, and this market settles on which player advances. In prediction-market terms, a **YES** share pays out if the named outcome happens, while a **NO** share pays out if it does not; here, the “Liudmila Samsonova” side wins if Samsonova progresses, and the “Barbora Krejcikova” side wins if Krejcikova does. If the match is not completed in the ways specified by the market rules, it can settle 50-50 instead.[1][3][8]
The current 100% crowd-implied probability for one side suggests traders expect a highly one-sided result, but this matchup has not always been straightforward. Krejcikova comes in as the higher-ranked player, yet Samsonova has done well in the pairing before, including a three-set win in Strasbourg in 2024, and WTA reporting noted that Samsonova now held a 3-1 head-to-head lead after that match.[2][18] Tennis preview pages also point to Samsonova’s stronger record in this matchup on hard courts, which matters because the National Bank Open is played on that surface.[2][7]
The main catalysts are simple: whether the match starts on schedule, whether either player withdraws, and whether any weather or scheduling disruption pushes play beyond the market’s seven-day deadline. Live listings show the contest as an upcoming Round 2 match at Court 1 in Toronto, with Tennis Channel coverage flagged once play begins, so the practical risk is less about format and more about whether the actual winner is determined within the settlement window.[1][6][8]
Methodology
This page reviews National Bank Open: Liudmila Samsonova vs Barbora Krejcikova across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Prediction Market UK, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
UK Frequently Asked Questions
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Market UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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